Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
What could make Timer to stop?
Message
 
 
To
05/03/2009 12:27:15
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01385495
Message ID:
01385931
Views:
32
>>>>>>I have a small program with two timers; one timer is simply used to show the progressing of times (in seconds). The second timer actually performs a procedure every minute. It happened once last week and today that customer reports that the timer that shows progressing of time stops at various points (e.g. 43 seconds) and the program stops. It does not freeze though as he is able to click on the Stop button and restart the program.
>>>>>>
>>>>>>What could possibly cause the timer to stop?
>>>>>
>>>>>A tight loop that doesn't give the timer any chance to act. Make sure that any such loops in your code include DOEVENTS to allow the timer to fire.
>>>>>
>>>>>Tamar
>>>>
>>>>What do you mean by "tight loop"? Is it DO WHILE that runs through many records in the timer event?
>>>
>>>Any kind of loop that has processing code and no wait states.
>>>
>>>Tamar
>>
>>Let me clarify. Say I have a following pseudo loop in a timer event:
>>
>>
>>do while <Some Condition>
>>
>>    DOEVENTS
>>
>>    <SQL Select statement >
>>
>>   <Call to Print a short Report>
>>
>>enddo
>>
>>
>>Putting this DOEVENT in the place where I put it above would be advisable?
>>
>>Thank you.
>
>Do you turn the timer off when it starts the timer method (this.enabled = .F.) and then turn it back on when it reaches the end of the method?

Yes, I do that.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
Previous
Reply
Map
View

Click here to load this message in the networking platform